package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    public void addNewEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setStatus(StatusConstant.ENABLE);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        employeeMapper.addNewEmp(employee);
    }


    public PageResult findAllEmp(EmployeePageQueryDTO ep){
        PageHelper.startPage(ep.getPage(), ep.getPageSize());
        Page<Employee> pg = employeeMapper.pageQuery(ep);
        return new PageResult( pg.getTotal(), pg.getResult());

    }

    public void use_not_use(Integer status, Long id){
        Employee e = new Employee();
        e.setStatus(status);
        e.setId(id);
        employeeMapper.update(e);
    }

    public Employee getEmpById(Long id){
        Employee e = employeeMapper.getEmpByid(id);
        e.setPassword("******");
        return e;
    }

    public void updateEmp(EmployeeDTO eDTO){
        Employee e = new Employee();
        BeanUtils.copyProperties(eDTO, e);
        employeeMapper.update(e);
    }

    public Boolean updatePasswd(PasswordEditDTO pw){
        pw.setEmpId(BaseContext.getCurrentId());
        String oldpw = DigestUtils.md5DigestAsHex(pw.getOldPassword().getBytes());
        String myOldpw = employeeMapper.getEmpByid(pw.getEmpId()).getPassword();
        if(!myOldpw.equals(oldpw)){
            return false;
        }
        Employee e = new Employee();
        e.setId(pw.getEmpId());
        e.setPassword(DigestUtils.md5DigestAsHex(pw.getNewPassword().getBytes()));
        employeeMapper.update(e);
        return true;
    }


}
